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Advice needed on web tags for wind.

From build 3044 the development baton passed to Mark Crossley. Mark has been responsible for all the Builds since. He has made the code available on GitHub. It is Mark's hope that others will join in this development, but at the very least he welcomes your ideas for future developments (see Cumulus MX Development suggestions).

Moderator: mcrossley

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broadstairs
Posts: 744
Joined: Thu 14 Aug 2008 7:17 am
Weather Station: Ecowitt GW1003/GW1103/GW2000
Operating System: Windows 7 and Linux
Location: Broadstairs, Kent, UK
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Advice needed on web tags for wind.

Post by broadstairs »

I am trying to achieve my website displaying the actual wind speed and gust speed and highest gust today as exactly reported by my Ecowitt WS80 and am somewhat confused by the descriptions on the web tags. I need to know which tags will display this information as presented by my station. Can someone please point me in the correct direction?

Stuart
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mcrossley
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Weather Station: Davis VP2/WLL
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Re: Advice needed on web tags for wind.

Post by mcrossley »

wlatest will reflect "Wind Speed" on the app.
wgust will be the highest "Wind Gust" on the app in the last 10 minutes.

The "Wind Gust" value on the app is not available.
broadstairs
Posts: 744
Joined: Thu 14 Aug 2008 7:17 am
Weather Station: Ecowitt GW1003/GW1103/GW2000
Operating System: Windows 7 and Linux
Location: Broadstairs, Kent, UK
Contact:

Re: Advice needed on web tags for wind.

Post by broadstairs »

mcrossley wrote: Mon 27 Jun 2022 12:43 pm wlatest will reflect "Wind Speed" on the app.
wgust will be the highest "Wind Gust" on the app in the last 10 minutes.

The "Wind Gust" value on the app is not available.
Thanks Mark, I am puzzled as to why that has to be the highest in 10 minutes? What is wrong with having both? My logic in seeing the current gust is some idea of how the weather (wind) is behaving. Wind here on the coast is important especially if one is doing any kind of water sport.

Stuart
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mcrossley
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Joined: Thu 07 Jan 2010 9:44 pm
Weather Station: Davis VP2/WLL
Operating System: Bullseye Lite rPi
Location: Wilmslow, Cheshire, UK
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Re: Advice needed on web tags for wind.

Post by mcrossley »

Ecowitt do some odd things with their data presentation.

The Meteo "norm" for wind gust is a 10 minute value which is what CMX uses by default.

What you see on the Ecowitt App when using a WS80 (it is different for non-ultrasonics - another quirk!, and different again if you use the Ecowitt HTTP protocol - yet another quirk!) is...

"Wind Speed" shows the average speed over the last sample period (4.75 seconds for the WS80)
"Wind Gust" shows the highest gust in the last 30 seconds

So the average speed on the app can drop to zero because there is currently no wind, but the gust lags behind and stays at a high value. This is exactly what CMX shows, but CMX uses the recognised standard 10 minute gust value rather than a 30 second value.

EDIT: CMX does not have tags for gust value in the last xx seconds.
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